{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT3065HDD#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT3065HDDPBF","canonicalUrl":"https://icboms.com/analog-devices/LT3065HDDPBF","factsUrl":"https://icboms.com/api/mcp/products/LT3065HDD%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT3065HDD#PBF adjustable LDO, 500 mA output, 85 dB PSRR at 120 Hz, 45 V input, 10-WFDFN exposed pad, -40°C to 150°C.","salesMarkdown":"## 500 mA LDO with 85 dB PSRR — the noise-rejection anchor The LT3065HDD#PBF is an adjustable positive LDO from Analog Devices, delivering 500 mA output with a PSRR of 85 dB at 120 Hz — that 85 dB figure is the rejection of rectified line ripple, so a 1 Vpp ripple on the input at 120 Hz comes out as roughly 56 µVpp on the output. For a precision analog rail feeding an ADC or a sensor front-end, that keeps the supply noise floor well below the signal chain's own noise. Input voltage range extends to 45 V, which covers 24 V industrial supplies with margin for transients up to that ceiling. ## Dropout, quiescent, and protection — the real-world trade-offs Maximum dropout is 0.51 V at the full 500 mA load — that means the input must stay at least 0.51 V above the output voltage across temperature and load. If you're regulating 3.3 V from a 5 V rail, that's fine; if you're trying to get 3.3 V from a 3.6 V lithium cell near end-of-discharge, the headroom disappears. Plan the input rail accordingly. Quiescent current is 110 µA typical — not the lowest in class, but reasonable for an always-on rail in a system that isn't battery-sleeping for months. The 25 mA maximum supply current includes the driver and reference; it's not a concern at 500 mA output but matters if the part is lightly loaded and you're budgeting the total system Iq. Built-in protections cover overcurrent, overtemperature, and reverse polarity — the reverse polarity clamp is a real differentiator for field power supplies where a user might reverse the input leads. The control features (current limit, enable, power good, soft start) give the system designer a clean power-up sequence and fault reporting. ## Package and thermal — the 10-DFN exposed pad The 150°C maximum junction temperature gives headroom, but only if the board copper sinks the heat. Surface-mount only — no through-hole variant. The tube packaging (50 per tube typical) is fine for prototype builds; production volumes usually shift to tape-and-reel, so confirm the packaging code if ordering for a pick-and-place line. The 150°C junction rating is the absolute limit; derate power dissipation above 125°C ambient per the datasheet thermal resistance curves.","metaTitle":"LT3065HDD#PBF LDO Regulator, 500 mA, 85 dB PSRR","metaDescription":"Analog Devices LT3065HDD#PBF adjustable LDO, 500 mA output, 85 dB PSRR at 120 Hz, 45 V input, -40°C to 150°C. Active, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"85dB (120Hz)","Package":"Tube","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"10-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Enable, Power Good, Soft Start","Current - Output":"500mA","Protection Features":"Over Current, Over Temperature, Reverse Polarity","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 150°C","Voltage - Input (Max)":"45V","Voltage Dropout (Max)":"0.51V @ 500mA","Current - Supply (Max)":"25 mA","Voltage - Output (Max)":"40V","Supplier Device Package":"10-DFN (3x3)","Current - Quiescent (Iq)":"110 µA","Voltage - Output (Min/Fixed)":"0.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.97","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.97000","currency":"USD"},{"qty":10,"price":"$6.29700","currency":"USD"},{"qty":25,"price":"$6.00440","currency":"USD"},{"qty":100,"price":"$5.21360","currency":"USD"},{"qty":250,"price":"$4.97928","currency":"USD"},{"qty":500,"price":"$4.53996","currency":"USD"},{"qty":1000,"price":"$3.95415","currency":"USD"},{"qty":2500,"price":"$3.80770","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of LT3065HDD#PBF and why does it matter?","answer":"The PSRR is 85 dB at 120 Hz. That 85 dB is the rejection of 120 Hz rectified line ripple — critical for powering sensitive analog circuits from a rectified AC source, because it keeps the output clean without requiring a secondary LC filter."},{"question":"Will LT3065HDD#PBF drop into a board designed for ADP7105ARDZ-3.3?","answer":"No — the ADP7105ARDZ-3.3 is a fixed 3.3 V output in a different package (SOIC-8) with a 20 V max input and 125°C max temp. The LT3065HDD#PBF is adjustable, 45 V input, 150°C rated, and in a 10-DFN package. They are not pin-compatible or drop-in replacements. A board spin is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT3065HDDPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT3065HDDPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}